Somewhere around 1977/78 I was blasting down a great hill on a two lane road with no shoulder and a gully running along side of it. I was in the 53x11 and cranking, and that's all I remember.
The guy who was behind the truck that was following me said the truck mirror clipped my shoulder and launced me off of the road and into the gulley/ditch. He said he saw me go in and then the bike bounce up a couple of times. I had a concussion and I think one spot under my right arm didn't have road rash and or gravel impaled in it.
He stayed with me while someone went to call an ambulance and he offered to call my family and let them know I was on the way to the hospital. The guy who hit me never stopped.
I have had a couple of massive one side of the body road rash producing crashes in Crits. Those suck because you get to see other riders roll over your bike.